.container{
  max-width: 800px;
  overflow: hidden;
  padding: 20px 35px;
}
.title{
  text-align: center;
}
.back_body{
  text-align: right;
}
.back{
  display: inline-block;
  padding: 3px 6px;
  border: 1px solid #ccc;
  border-radius: 6px;
  cursor: pointer;
}